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The heat death of the universe (also known as the Big Chill or Big Freeze) [1] [2] is a hypothesis on the ultimate fate of the universe, which suggests the universe will evolve to a state of no thermodynamic free energy, and will therefore be unable to sustain processes that increase entropy.
This pathology occurs due to the normal physiological drop in maternal clotting factors after delivery which greatly increases the risk of secondary postpartum hemorrhage. [14] Another bleeding risk factor is thrombocytopenia, or decreased platelet levels, which is the most common hematological change associated with pregnancy induced hypertension.
This is a timeline of the Universe from the Big Bang to the heat death scenario. The different eras of the universe are shown. The heat death will occur in around 1.7×10 106 years, if protons decay. [citation needed]
From 1999-2023, the Journal of American Medical Association recorded 21,518 deaths where heat was either the underlying cause or the contributing cause of death, likely an underestimation, they say.
To prevent heat stroke, the Cleveland Clinic advises avoiding strenuous activity in the heat and consuming sports drinks or lightly salted water. Also, wear light, loose-fitting clothes in the heat.
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In urban areas people are at an increased susceptibility to hyperthermia. This is due to a phenomenon called the urban heat island effect. [36] Since the 20th century in the United States, the north-central region (Ohio, Indiana, Illinois, Missouri, Iowa, and Nebraska) was the region with the highest morbidity resulting from hyperthermia.
Heat-related deaths in people older than 65 years reached a record high of an estimated 345 000 deaths in 2019". [3]: 9 More than 70,000 Europeans died as a result of the 2003 European heat wave. [40] Also more than 2,000 people died in Karachi, Pakistan in June 2015 due to a severe heat wave with temperatures as high as 49 °C (120 °F).